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Near-Infrared Polarimetric Image Sensors Based on Ordered Sulfur-Passivation GaSb Nanowire Arrays

2022-07-19

 

Author(s): Zhang, K (Zhang, Kai); Ren, ZH (Ren, Zhihui); Cao, HC (Cao, Huichen); Li, LL (Li, Lingling); Wang, Y (Wang, Ying); Zhang, W (Zhang, Wei); Li, YB (Li, Yubao); Yang, HT (Yang, Haitao); Meng, Y (Meng, You); Ho, JC (Ho, Johnny C.); Wei, ZM (Wei, Zhongming); Shen, GZ (Shen, Guozhen)

Source: ACS NANO Volume: 16 Issue: 5 Pages: 8128-8140 DOI: 10.1021/acsnano.2c01455 Published: MAY 24 2022

Abstract: The near-infrared polarimetric image sensor has a wide range of applications in the military and civilian fields, thus developing into a research hotspot in recent years. Because of their distinguishing ID structure features, the ordered GaSb nanowire (NW) arrays possess potential applications for near-infrared polarization photodetection. In this work, single-crystalline GaSb NWs are synthesized through a sulfurcatalyzed chemical vapor deposition process. A sulfur-passivation thin layer is formed on the NW surface, which prevents the GaSb NW core from being oxidized. The photodetector based on sulfur-passivation GaSb (S-GaSb) NWs has a lower dark current and higher responsivity than that built with pure GaSb NWs. The photodetector exhibits a large responsivity of 9.39 X 10(2) A/W and an ultrahigh detectivity of 1.10 x 10(11) Jones for 1.55 mu m incident light. Furthermore, the dichroic ratio of the device is measured to reach 2.65 for polarized 1.55 mu m light. Through a COMSOL simulation, it is elucidated that the origin of the polarized photoresponse is the attenuation of a light electric field inside the NW when the angle of incident polarization light rotates. Moreover, a flexible polarimetric image sensor with 5 X 5 pixels is successfully constructed on the ordered S-GaSb NW arrays, and it exhibits a good imaging ability for incident near-infrared polarization light. These good photoresponse properties and polarized imaging abilities can empower ordered S-GaSb NW arrays with technological potentials in next-generation large-scale near-infrared polarimetric imaging sensors.

Accession Number: WOS:000812148900087

PubMed ID: 35511070

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Ho, Johnny C         K-5275-2012         0000-0003-3000-8794

Li, Yubao         AEF-9707-2022

Li, Yubao                  0000-0002-0979-8747

Meng, You         L-4165-2017         0000-0002-5385-4080

ISSN: 1936-0851

eISSN: 1936-086X

Full Text: https://pubs.acs.org/doi/10.1021/acsnano.2c01455



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